Cable Jointing

Who’s it for?

The Cable Jointing Assessment is designed for individuals who wish to practice as an L.V. Cable Jointer. It demonstrates that they have the level of competence expected by the industry in the following key occupational areas:

Risk Assessment, including COSHH requirements

Safe Isolation and Permit to Work

Completion of a gland and termination into a TP&N Switch Enclosure with a 90-degree bend

Completion of a 4 Core Through Joint

Testing of the installation for Insulation Resistance and Continuity

Completion of Documentation to include BS 7671 Schedule of Test Results Completion of Hand Over Documentation

Assessment of Underpinning Knowledge

The understanding and application of industry recognised procedures,
working practices and the requirements of statutory and non-statutory
regulations

What do I have to do?

The Cabling Jointing Assessment is broken down into different sections below. During some of the practical sections, you’ll be watched by the assessor. This can seem intimidating, so try to practice beforehand with a colleague watching you to get used to it.

setting the cable with a 900 bend on a proprietary rig using cable cleats

selecting and fitting the correct gland

termination of the cable into the switch enclosure, including lugging, crimping and connection of the cable cores.

selection and fitting of the correct size of Earth Connection

Section A3: Confirm Isolation (15 mins)

To demonstrate occupational competence candidates will be expected to confirm safe isolation in the correct sequence

Section A4: Completion of a through Joint (1hr 30 mins)

Candidates will need to demonstrate occupational competence, in accordance with statutory and non-statutory regulations and approved industry working practices, in the following areas:

the production of a Through Joint in a 4 Core XLPE Cable. The supply side cable will be fixed in situ on a proprietary Rig.

Section B: Inspection and Testing of the Installation (1 hour)

You will be expected to follow practices and procedures that take into account electrically sensitive equipment. Candidates will be required to demonstrate competence in

the Inspection and Testing of the cable joint and termination in accordance with the requirements of BS 7671.

in testing for:

Insulation Resistance

Continuity

the completion of the following documentation.

BS 7671 Schedule of Test Results

Commissioning and Hand Over

Section C: Assessment of Underpinning Knowledge (1 hour)

Health and Safety Legislation and Practice

Safe Isolation and Permit to Work

Harmonised Cable Colours and Phasing

Cable Construction and Types

Internal and External Glands

Oxidisation

Compound Preparation and Pouring

Use and care of Tools

Testing

The examination will be Open Book and candidates will have access to:

IET ‘On Site Guide’

The Section D assessment will last for one hour and be in the form of a computerised multiple-choice test. Candidates will be expected to answer 30 questions and achieve a minimum pass mark of 70% (21 correct answers).